Add PageNoteButton to various components for enhanced note management

WebApp/Components/Features/Calendar/Index.razor

@@ -16,6 +16,7 @@
         <AuthorizeView Roles="@AuthRoles.Administrator">
             <MudButton StartIcon="@Icons.Material.Filled.AdminPanelSettings" Href="calendar/admin" Variant="Variant.Outlined" Color="Color.Default">Admin</MudButton>
         </AuthorizeView>
+        <PageNoteButton PageIdentifier="Event Calendar" />
     </ActionButtons>
 </PageHeader>
 

WebApp/Components/Features/MeetingSchedule/Index.razor

@@ -1,4 +1,4 @@
-@page "/meeting-schedule"
+@page "/meeting-schedule"
 @attribute [Authorize]
 @using System.Text
 @using Core.Calculation
@@ -10,7 +10,11 @@
 @inject ClipboardService ClipboardService
 @inject LocalStorageService LocalStorage
 
-<PageHeader Title="@($"{Configuration["ChapterSettings:Shortname"]} TSA Schedule {Configuration["ChapterSettings:CompetitionYear"]}")" />
+<PageHeader Title="@($"{Configuration["ChapterSettings:Shortname"]} TSA Schedule {Configuration["ChapterSettings:CompetitionYear"]}")">
+    <ActionButtons>
+        <PageNoteButton PageIdentifier="Meeting Schedule" />
+    </ActionButtons>
+</PageHeader>
 
 <MudPaper Elevation="2" Class="pa-3 pa-md-6 mt-4">
     <MudGrid>

WebApp/Components/Features/Students/EventRanking.razor

@@ -1,4 +1,4 @@
-@page "/students/event-ranking"
+@page "/students/event-ranking"
 @attribute [Authorize]
 @using Microsoft.EntityFrameworkCore
 @using WebApp.Models
@@ -9,7 +9,11 @@
 
 <PageHeader
     Title="Student Event Ranks"
-    Icon="@AppIcons.EventRank" />
+    Icon="@AppIcons.EventRank">
+    <ActionButtons>
+        <PageNoteButton PageIdentifier="Event Ranking" />
+    </ActionButtons>
+</PageHeader>
 
 @if (_students == null)
 {

WebApp/Components/Features/Students/Registration.razor

@@ -17,6 +17,7 @@
                    OnClick="ToggleRegionalFilter">
             @(_showRegionalOnly ? "Showing Regional Only" : "Show Regional Only")
         </MudButton>
+        <PageNoteButton PageIdentifier="Registration" />
     </ActionButtons>
 </PageHeader>
 

WebApp/Components/Features/Teams/Assignment.razor

@@ -1,4 +1,4 @@
-@page "/teams/assignment"
+@page "/teams/assignment"
 @attribute [Authorize]
 @using Core.Calculation
 @using Core.Validation
@@ -18,6 +18,7 @@
         <MudButton StartIcon="@Icons.Material.Filled.Edit" Href="students/event-ranking" Variant="Variant.Outlined">
             Edit Student Event Rankings
         </MudButton>
+        <PageNoteButton PageIdentifier="Team Assignment" />
     </ActionButtons>
 </PageHeader>
 

WebApp/Components/Pages/NoteEditDialog.razor

@@ -6,7 +6,7 @@
 @inject ISnackbar Snackbar
 @inject IDialogService DialogService
 
-<MudDialog>
+<MudDialog Class="@MarkdownHelper.GetNoteColorClass(_note.Id)">
     <DialogContent>
         <MudStack Spacing="3">
             <MudTextField @bind-Value="_note.Title"
@@ -14,7 +14,8 @@
                          Variant="Variant.Outlined"
                          Required="true"
                          RequiredError="Title is required"
-                         MaxLength="200" />
+                         MaxLength="200"
+                         ReadOnly="@IsPageNote" />
 
             <MudText Typo="Typo.subtitle2" Class="mb-2">Content (Markdown)</MudText>
             <MarkdownEditor Value="@_note.Content"
@@ -42,6 +43,8 @@
 
     private Note _note = null!;
 
+    private bool IsPageNote => Note?.Title?.StartsWith("@") ?? false;
+
     protected override void OnInitialized()
     {
         _note = new Note

WebApp/Components/Pages/NoteHistoryDialog.razor

@@ -4,7 +4,7 @@
 @inject INotesService NotesService
 @inject IDialogService DialogService
 
-<MudDialog>
+<MudDialog Class="@MarkdownHelper.GetNoteColorClass(NoteId)">
     <DialogContent>
         @if (_isLoading)
         {

WebApp/Components/Pages/NoteVersionViewDialog.razor

@@ -2,7 +2,7 @@
 @using WebApp.Services
 @using MudBlazor
 
-<MudDialog>
+<MudDialog Class="@MarkdownHelper.GetNoteColorClass(_history.NoteId)">
     <DialogContent>
         <MudStack Spacing="3">
             <MudText Typo="Typo.h6">@_history.Title</MudText>

WebApp/Components/Pages/Notes.razor

@@ -54,7 +54,8 @@
                         <MudExpansionPanel @key="@($"note-{noteId}")"
                                            Icon="@Icons.Material.Filled.Note"
                                            IsExpanded="@isExpanded"
-                                           ExpandedChanged="@((bool expanded) => OnPanelExpandedChanged(noteId, expanded))">
+                                           ExpandedChanged="@((bool expanded) => OnPanelExpandedChanged(noteId, expanded))"
+                                           Class="@MarkdownHelper.GetNoteColorClass(noteId)">
                             <TitleContent>
                                 <MudStack Row="true" AlignItems="AlignItems.Center" Spacing="2" Class="flex-grow-1">
                                     <MudText Typo="Typo.body1" Class="flex-grow-1" Style="min-width: 0;">
@@ -402,7 +403,7 @@
 
             var result = await DialogService.ShowMessageBox(
                 "Delete Note",
-                (MarkupString)$"Are you sure you want to delete <b>{note.Title}</b>? This cannot be undone.",
+                (MarkupString)$"Are you sure you want to delete <b>{note.Title}</b>? You can restore it later from the 'Show Removed' view.",
                 yesText: "Yes",
                 noText: "Cancel");
 

WebApp/Components/Shared/Components/NoteCard.razor

@@ -4,7 +4,7 @@
 @* Reuse dialog options pattern - could be extracted if used in more places *@
 
 <MudItem xs="12" sm="6" md="4">
-    <MudCard Elevation="4" Class="pa-4" Style="cursor: pointer; height: 100%;" @onclick="OpenNoteDialog">
+    <MudCard Elevation="4" Class="@($"pa-4 {MarkdownHelper.GetNoteColorClass(Note.Id)}".Trim())" Style="cursor: pointer; height: 100%;" @onclick="OpenNoteDialog">
         <MudCardContent>
             <div class="d-flex align-center mb-2">
                 <MudIcon Icon="@Icons.Material.Filled.Note" Size="Size.Medium" Class="mr-2" />

WebApp/Components/Shared/Components/NoteViewDialog.razor

@@ -4,7 +4,7 @@
 @inject NavigationManager NavigationManager
 @implements IAsyncDisposable
 
-<MudDialog>
+<MudDialog Class="@MarkdownHelper.GetNoteColorClass(NoteId)">
     <DialogContent>
         @if (_isLoading)
         {

WebApp/Components/Shared/Components/PageNoteButton.razor

@@ -8,7 +8,8 @@
           Variant="@Variant"
           Size="@Size"
           Color="@ButtonColor"
-          Tooltip="@TooltipText">
+          Tooltip="@TooltipText"
+          Class="@MarkdownHelper.GetNoteColorClass(_noteId)">
     @if (!string.IsNullOrEmpty(ButtonText))
     {
         @ButtonText
@@ -37,6 +38,7 @@
     private string IconValue => Icon ?? Icons.Material.Filled.Note;
     private string TooltipText => Tooltip ?? $"Page notes for {PageIdentifier}";
     private bool _hasContent = false;
+    private int _noteId = 0;
     private Color ButtonColor => _hasContent ? Color.Success : (Variant == Variant.Filled ? Color.Primary : Color.Default);
     private CancellationTokenSource? _cancellationTokenSource;
     private bool _isDisposed = false;
@@ -59,6 +61,7 @@
         {
             var note = await NotesService.GetPageNoteAsync(PageIdentifier);
             _hasContent = note != null && !string.IsNullOrWhiteSpace(note.Content);
+            _noteId = note?.Id ?? 0;
             
             if (!_isDisposed)
             {
@@ -100,8 +103,9 @@
             var dialog = await DialogService.ShowAsync<PageNoteDialog>($"Page Notes: {PageIdentifier}", parameters, options);
             var result = await dialog.Result;
             
-            // Refresh content indicator after dialog closes
+            // Always refresh content indicator after dialog closes
-            if (!result.Canceled && !_isDisposed)
+            // (content may have been saved even if dialog was closed with Cancel)
+            if (!_isDisposed)
             {
                 await CheckNoteContent();
             }

WebApp/Components/Shared/Components/PageNoteDialog.razor

@@ -3,7 +3,7 @@
 @inject ISnackbar Snackbar
 @implements IAsyncDisposable
 
-<MudDialog>
+<MudDialog Class="@MarkdownHelper.GetNoteColorClass(_note.Id)">
     <DialogContent>
         @if (_isLoading)
         {
@@ -167,15 +167,21 @@
             }
             else
             {
-                await NotesService.CreateNoteAsync(_note);
+                // CreateNoteAsync returns the note with the ID populated
+                var createdNote = await NotesService.CreateNoteAsync(_note);
+                // Update _note with the returned note to get the ID immediately
+                _note = createdNote;
+                _isEdit = true; // Mark as existing note now
                 Snackbar.Add("Page note created successfully", Severity.Success);
             }
 
             if (!_isDisposed)
             {
-                // After saving, switch back to view mode and reload the note
+                // After saving, switch back to view mode and reload the note to ensure we have latest data
                 _isEditMode = false;
                 await LoadPageNote();
+                // Ensure dialog re-renders with updated color class after note ID is set
+                StateHasChanged();
             }
         }
         catch (TaskCanceledException)

WebApp/Services/MarkdownHelper.cs

@@ -92,4 +92,16 @@ public static class MarkdownHelper
 
         return plainText;
     }
+
+    /// <summary>
+    /// Gets the CSS class name for a note's color based on its ID.
+    /// Uses modulo 3 to cycle through 3 pastel color classes.
+    /// </summary>
+    /// <param name="noteId">The note ID.</param>
+    /// <returns>CSS class name (e.g., "note-color-0", "note-color-1", "note-color-2"), or empty string if noteId is 0.</returns>
+    public static string GetNoteColorClass(int noteId)
+    {
+        if (noteId == 0) return string.Empty;
+        return $"note-color-{noteId % 3}";
+    }
 }

WebApp/wwwroot/app.css

@@ -230,3 +230,16 @@
     max-width: 100%;
     height: auto;
 }
+
+/* Note color classes - pastel background colors */
+.note-color-0 {
+    background-color: #e3f2fd;
+}
+
+.note-color-1 {
+    background-color: #fff9e6;
+}
+
+.note-color-2 {
+    background-color: #f3e5f5;
+}